FlexShare and priority levels

Priority levels are relative. When you set the priority level of a volume or operation, you are not giving that volume or operation an absolute priority level. Instead, you are providing a hint to Data ONTAP about how to set priorities for accesses to that volume or operations of that type relative to other accesses or operations.

For example, setting the priority level of each of your volumes to the highest level will not improve the performance of your system. In fact, doing so would not result in any performance change.